Car roof



1,629 472 May 24 1927' c. D. BONSALL.

CAR ROOF Filed April 15. 192e 5 i?" 6 ff /llI/lllIl//ll/llll/l/lll/lllax lll Ill/1111nlllllll/I/l/llllll",

(E y, /m/fA/roe:

it" formed in margins of the roof sheets.

Patented May 24, 1927.

i` i f i* i' d" 1,629,472?

CHARLES DAVIS EQNSALL, PITTSBUHGH; PENNSYLVANIA; ASSIGNO'IRTO' P, Hi.

MUR-PHY COMBANY, 0F."NEVI`KENSINGTON'g PENNSYLVANIA',LCOIR/:9072EATION''-O15V FENN SYLVAIN IA';

can Roer'.

Applieatonalcd April 15, 1926. SeriatNo. 102,106.v

lily invention relates to car roofs ofjth'e socalled flexible typewherein the roof sheets' are movable relative to each other. Singlecourse roofs of this type are usually designed so that the seams arelocatedat the carlines so that the carlines-will form part of the" scamconstruction or cooperate therewith iu some manner. lVith such designs,there must be as many carlines as seams, whereas` a smaller number ofycarlines may be sutlcient forthe other structural requirements ot' thecar. Besides, the spacing`r of the-carlines must be accurately made withreference to the width ofthe sheets. and the margins of the sheets mustbe. shaped to meet the 'requirements ofthe particular seam construetion.The principal object of the present invention is to make theseam.construction wholly independent of the carlinesgto yprovide for theelimination of larlines that` are unnecessary for the strength otsthecar; to simplify the scam ,construction grandto facilitate the repairof damaged roofs and the rerooiing of old cars. The invention consistsprincipally in arranging the sheet-supporting structure of single courseroofs so that the bodies of the sheets supported thereby7 will behigherthan the carlines and provided with recesses to receive dependinggrooves It also consists in the combinations of parts hereinafterdescribed and claimed.

In the accon'ipanying drawing` wherein like reference numerals refer tolike parts wherever they occur.

Fig. l is a. transverse section through a car roof' embodying myinvention;

Fig. 2 is a longitudinal section through the ridge portion of the car onthe line 2 2 in Fig. l; and

Fig. 3 through the roof adjacent to one of the purlins.

The construction illustrated in the accompanying drawing comprises theside plates 1 of a car body, carlines 2 secured to said side plates andspanning the distance between them. purlins 3 resting on top of thecai-lines, root' sheets Ll resting on the purlins and preferably alsohaving 'their ends supported by the side plates. and seam covers 5 forthe oints between adjacent roof sheets.

The purlins 3 are preferably wooden strips that are secured to the topsof the carlines 2 by bolts 6 and extend continuously from is an enlargedlongitudinal sectionv end to en'd'of the car; but at suitable intervals,the top surface 'thereof is'mortised or gained cross-wise to formnotches 7 for co-y operation with the dependingportions.8 of the roofsheets hereinafter described.

. The roof sheets extend trom side'plate to side plate and the bodyportions thereof restv directly upon the purlins and the endpertionsthereof preferably rest upon wooden strips l secured to the topsvof theside plates.: The roof sheets are loosely held in position by the seamcovers o, which permitsuch lim- 4 ited movement as may be requiredtoaccommodate the sheets to the distortionsof'the' car and stillpreventexcessive movement' of the sheets. The roof sheets havedepending` eaves flanges t that overhang, the outer edges of the woodenside plate stripsla; and:

the side marginal*portions of.. each sheet-'are provided withlongitudinal grooves or channels 8 vwhich extend below the body ofthesheet g nand the side edge portions ofthe sheet.

being preferably also the outer walls ofthe channels, extend upwardlyabove the plane of the body of the sheet in the form of vertical flanges9.

Adjacent sheets are spaced apart, with their adjacent channels extendinginto the notches provided therefor in the purlins. The width of suchnotches is such that when the sheets are in their normal positions, withthe proper slight clearance l() between their edge flanges, the innerwalls of the channels are also spaced from the Walls of the purlingrooves by a slight clearance 1l. 'By this arrange-ment7 the sheets arefree to accommodate themselves to the distortions of the car frame; butthey are pre vented from shifting unduly out of position by contact oft-he wall of the purlin groove with the depending channel of the sheet.This arrangement prevents undue longitudinal displacement of the sheets;and the movement of the sheets crosswise of the car is limited bydepending fianges 12 at the ends of the seam covers, which flangesoverhang the depending eaves flanges l of the roofl sheets.

The seam cover 5 illustrated in the drawing is of inverted channel-shapeand of sufficient width to straddle the marginal portions of adjacentsheets, and its edges are provided with laterally extending flanges 13adapted to bear flatwise against the body portions of such sheets. Thisseam cover is secured to the substructure in any suitable manner, as,for instance, by shoulder-bolts le that are riveted to the tops of theseam cover and have reduced lovver end portions that extend downwardlythrough the purlins and are threaded to receive nuts. By thisarrangement, the seam cover is very efhcient in excluding rain Watertrom the joint; but in case any Water passes the flange of the seamcover,n it is stopped by the upstanding flange ot' the sheet and iscarried off through the channel provided therefor.

It is noted that the seam construction and the carline are Whollyindependent of each other, and consequently, need not be in verticalalinement and only such number ot carlines need be used as are necessaryto afford the required structurer-.l strength for the car body. It isalso noted that the seam construction is oit. unusual y simple andeconomical design and that the sheets are capable of movement whollyindependently of each other. It is also noted, as a greatadvantage otthis construction, that it may readily be applied at ordinary car repairshops with sheets of a Width di fierent from the spacing ot thecarlines.

Vhat I claim is:

l. A car root comprising earlines, purlins ontop of said carlines andhaving notches in the tops thereof, roof sheets movably Lesa/ivasupported on the tops of said purlins and having their side marginsformed into channels that rest in said notches but are normally spacedslightly from the Walls thereofn whereby said Walls permit limitedmovement oi the sheets but prevent excessive movement thereof.

Q. A, car roof comprising carlines, pur lins on said carlines havingnotches in the tops thereof and root sheets movably resting on the topsot' said purlins and having their side margins formed into channels thatrest in said notches, said rootI sheets being spaced from each otlierandfrom the sides ot' said notches, and seam covers above the marginalportions ot said sheets.

A car root comprising carlines, purlins on said carlines h: ving notchesin the tops thereof, and roof sheets movably resting on the topsv ofsaid purlins, the side edge portions of said root sheetscomprisingflanges that extend above the body there ot and the portionsof the sheet adjacent to said flanges being formed into depressedchannels that extend below such bod; and rest in said notches, said roetsheets being spaced from each other and from the sides of said notches,.and seam covers above the marginal portions of said sheets.

Signed at New Kensington, Pa., this day of April, 1926. y

CHARLES DAVID BONSLLL.

